V1298 Tau Overview

HD 284154 1.48 R_⦿ 5700.00 K

V1298 Tau 1.33 R_⦿ 5050.00 K

V1298 Tau c

0.499 R_Jup

V1298 Tau d

0.572 R_Jup

V1298 Tau b

0.916 R_Jup

V1298 Tau e

0.890 R_Jup

HD 284154 B 1.48 R_⦿ 5700.00 K

Overview Notes System Parameters Nearby Data Legend

Architecture: V1298 Tau; HD 284154; V1298 Tau; HD 284154 B

Other Data: Bibliography 12; Exoplanet Archive Notes 9; HD 284154 Nearby Data 6; V1298 Tau Nearby Data 6; HD 284154 B Nearby Data 6

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
V1298 Tau	V1298 Tau c	Transit	2019	David et al. 2019	Confirmed Planet
V1298 Tau	V1298 Tau d	Transit	2019	David et al. 2019	Confirmed Planet
V1298 Tau	V1298 Tau b	Transit	2019	David et al. 2019	Confirmed Planet
V1298 Tau	V1298 Tau e	Transit	2019	David et al. 2019	Confirmed Planet

Exoplanet Archive Notes (9)

V1298 Tau

Value for Stellar Density drawn from Table 4, circular solution (ρ_*,circ). (David et al. 2019)
Stellar age estimated from range provided in ref. (Finociety et al. 2023)

HD 284154 B

Photometry corresponds to combined values for the unresolved binary components (Suárez Mascareño et al. 2022)

V1298 Tau c

Orbital inclination is a 3-sigma lower limit. (Suárez Mascareño et al. 2022)
RV semi-amplitude, eccentricity, planet mass, planet density are 3-sigma upper limit. (Suárez Mascareño et al. 2022)

V1298 Tau d

Orbital inclination is a 3-sigma lower limit. (Suárez Mascareño et al. 2022)
RV semi-amplitude, eccentricity, planet mass, planet density are 3-sigma upper limit. (Suárez Mascareño et al. 2022)

V1298 Tau b

Orbital inclination is a 3-sigma lower limit. (Suárez Mascareño et al. 2022)

V1298 Tau e

Orbital inclination is a 3-sigma lower limit. (Suárez Mascareño et al. 2022)

HD 284154 Stellar Parameters (2 Solutions)

RA: 04h05m14.36s

Dec: +20d08m21.29s

Distance: 108.337+0.712-0.702
pc

Parallax: 9.2021100±0.0597723 mas

Ecliptic Latitude: -.67123 deg

Ecliptic Longitude: 63.20421 deg

Galactic Latitude: -23.40407 deg

Galactic Longitude: 172.89357 deg

Total Proper Motion: 17.0788404±0.0612735 mas/yr

Proper Motion (RA): 5.04080±0.11574 mas/yr

Proper Motion (Dec): -16.3180000±0.0532392 mas/yr

Photometry: m_V
8.509±0.002; m_TESS
7.91604±0.00610; m_J
7.287±0.020; m_H
6.999±0.024; m_Ks
6.947±0.026; m_Kep
9.348; m_W1
6.911±0.058; m_W2
6.913±0.022; m_W3
6.879±0.016; m_W4
5.964±0.055; m_Gaia
8.356100±0.000526; m_B
9.149±0.034; m_g
---; m_i
---; m_r
---; m_u
---; m_z
---

Mission: K2 : Observed in Campaign 4

Tools: ExoFOP Target Overview Page; IRSA Finding Chart; K2 Targets; Stellar Hosts; K2 Time Series

Source	Suárez Mascareño et al. 2022	TICv8
T_eff (K)	5700±100	5873.000+283.263-160.566
Metallicity (dex)	0.050±0.150 [Fe/H]	---
v sin i (km/s)	10±1	---
Age (Gyr)	0.020±0.010	---
M_✶ (M_⦿)	1.28±0.06	1.063000+0.189401-0.123593
R_✶ (R_⦿)	1.477±0.082	2.0119000+0.0815518-0.1117350
Sp. T	G2	---
L_✶ (log₁₀(L_⦿))	---	0.6373482+0.0536360-0.0333572
ρ_✶ (g/cm³)	---	0.1840260+0.0539886-0.0380490
log g (log₁₀(cm/s²))	---	3.8573900+0.1048230-0.0709952

V1298 Tau Stellar Parameters (9 Solutions)

RA: 04h05m19.60s

Dec: +20d09m25.31s

Distance: 108.199+0.704-0.696
pc

Parallax: 9.2139200±0.0593414 mas

Ecliptic Latitude: -.65768 deg

Ecliptic Longitude: 63.22772 deg

Galactic Latitude: -23.37696 deg

Galactic Longitude: 172.89486 deg

Total Proper Motion: 16.9054651±0.0609722 mas/yr

Proper Motion (RA): 5.227930±0.130671 mas/yr

Proper Motion (Dec): -16.0768000±0.0480119 mas/yr

Photometry: m_V
10.115±0.009; m_TESS
9.4901±0.0062; m_J
8.687±0.023; m_H
8.191±0.023; m_Ks
8.094±0.021; m_Kep
10.514; m_W1
8.044±0.022; m_W2
8.071±0.021; m_W3
8.023±0.024; m_W4
7.611±0.163; m_Gaia
10.070200±0.000682; m_B
11.114±0.106; m_g
14.6179000±0.0100416; m_i
13.8830000±0.0098912; m_r
14.1993000±0.0110167; m_u
14.9719000±0.0094734; m_z
12.883500±0.011494

Mission: K2 : Observed in Campaign 4

Tools: ExoFOP Target Overview Page; IRSA Finding Chart; K2 Names; K2 Planets and Candidates; K2 Targets; Stellar Hosts; K2 Time Series

Source	Finociety et al. 2023	Johnson et al. 2022	Feinstein et al. 2022	Suárez Mascareño et al. 2022	Feinstein et al. 2021	David et al. 2019	TICv8	David et al. 2019	Gaia DR2
M_✶ (M_⦿)	1.26±0.06	1.135±0.047	1.095+0.049-0.047	1.170±0.060	---	1.101+0.049-0.051	0.8730000+0.1289430-0.0814357	1.099±0.049	---
R_✶ (R_⦿)	1.43±0.03	1.407±0.018	1.33+0.04-0.03	1.278±0.070	---	1.345+0.056-0.051	1.2704000+0.1348860-0.0885658	1.314+0.052-0.064	1.2943925+0.0238242-0.0446042
P_rot (days)	2.910±0.005	---	2.97+0.03-0.04	2.91±0.05	---	2.870±0.022	---	2.865±0.012	---
T_eff (K)	4941+31-16	---	---	5050±100	---	---	5159.6400+113.6600-92.3601	4970±120	4962.2764+87.7739-45.0464
L_✶ (log₁₀(L_⦿))	0.03902+0.01941-0.02032	---	---	-0.0205+0.0178-0.0186	---	---	0.01305642+0.07146623-0.04571535	-0.0297+0.0200-0.0210	-0.038449572+0.003682562-0.003714036
Metallicity (dex)	---	---	---	0.10±0.15 [Fe/H]	---	---	0.1387060±0.0312481 [M/H]	---	---
v sin i (km/s)	24.9±0.5	24.77±0.19	---	23.8±0.5	23.65+0.87-1.17	---	---	23±2	---
Age (Gyr)	0.0125±0.0025	0.028±0.004	---	0.020±0.010	---	0.023±0.004	---	0.023±0.004	---
Sp. T	---	---	---	K1	---	---	---	K0	---
log g (log₁₀(cm/s²))	4.227+0.010-0.008	---	---	---	---	---	4.171200+0.103261-0.110299	4.246±0.034	---
γ (km/s)	---	---	---	---	---	---	---	16.15±0.38	---
ρ_✶ (g/cm³)	---	---	---	---	---	---	0.6002801+0.2147490-0.1451755	0.679+0.117-0.072	---

V1298 Tau c Planetary Parameters (4 Solutions)

Status: Confirmed Planet
Detected By: Transit, Transit Timing Variations

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	David et al. 2019	Feinstein et al. 2022	Suárez Mascareño et al. 2022	Feinstein et al. 2021
M_p (M_⨁)	---	---	<76	---
M_p (M_Jup)	---	---	<0.24	---
e	<0.43	---	<0.30	0.10+0.03-0.04
i (deg)	88.49+0.92-0.72	---	>87.5	---
P (days)	8.24958±0.00072	8.2438+0.0024-0.0020	8.24892±0.00083	8.24959+0.00022-0.00018
ρ (g/cm³)	---	---	<3.5	---
R_p (R_⨁)	5.59+0.36-0.32	5.05±0.14	5.16±0.38	---
R_p (R_Jup)	0.499+0.032-0.029	0.45±0.01	0.460±0.034	---
R_p/R_✶	0.0381±0.0017	0.0337±0.0009	0.0371±0.0019	0.03921+0.00033-0.00062
K (m/s)	---	---	<22	---
a (au)	0.0825±0.0013	---	0.0841±0.0013	---
T_C (days)	2457064.2797±0.0034	2459481.16636+0.00269-0.00339	2457064.2801±0.0041	2458846.59715+0.00016-0.00019
a/R_✶	13.19±0.55	---	---	13.189+0.133-0.047
b	0.34+0.19-0.21	0.14+0.14-0.10	---	0.21+0.11-0.10
ω (deg)	92.0±70.0	---	---	87.840+57.050-61.780
λ (deg)	---	---	---	4.90+15.00-15.10
T_eq (K)	968±31	---	---	---
S (S_⨁)	146±20	---	---	---
T₁₄ (hours)	4.66±0.12	4.66+0.49-0.43	---	---

V1298 Tau d Planetary Parameters (3 Solutions)

Status: Confirmed Planet
Detected By: Transit, Transit Timing Variations

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	David et al. 2019	Feinstein et al. 2022	Suárez Mascareño et al. 2022
M_p (M_⨁)	---	---	<99
M_p (M_Jup)	---	---	<0.31
e	<0.21	---	<0.20
i (deg)	89.04+0.65-0.73	---	>88.3
P (days)	12.4032±0.0015	12.3960+0.0019-0.0020	12.4058±0.0018
ρ (g/cm³)	---	---	<2.4
R_p (R_⨁)	6.41+0.45-0.40	6.13±0.28	6.43±0.46
R_p (R_Jup)	0.572+0.040-0.035	0.55±0.03	0.574±0.041
R_p/R_✶	0.0436+0.0024-0.0021	0.0409+0.0014-0.0015	0.0464±0.0020
K (m/s)	---	---	<25
a (au)	0.1083±0.0017	---	0.1103±0.0017
T_C (days)	2457072.3913±0.0030	2459478.41494+0.00172-0.00157	2457072.3907±0.0063
a/R_✶	17.31±0.72	---	---
T_eq (K)	845±27	---	---
b	0.29+0.27-0.20	0.19+0.12-0.13	---
S (S_⨁)	85±11	---	---
ω (deg)	88.0±69.0	---	---
T₁₄ (hours)	5.59±0.13	5.59+0.57-0.53	---

V1298 Tau b Planetary Parameters (5 Solutions)

Status: Confirmed Planet
Detected By: Radial Velocity, Transit, Transit Timing Variations

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit; Atmospheric Spectroscopy

Source	David et al. 2019	Johnson et al. 2022	Feinstein et al. 2022	Suárez Mascareño et al. 2022	David et al. 2019
a/R_✶	27.0±1.1	26.06±0.46	---	---	27.6+1.5-1.0
T_eq (K)	677±22	---	---	---	668±22
b	0.46+0.13-0.24	0.564±0.026	0.45+0.05-0.04	---	0.29+0.16-0.19
S (S_⨁)	35±5	---	---	---	33.2+4.5-4.2
ω (deg)	85.0±72.0	---	---	---	91.0+70.0-71.0
e	<0.29	---	---	0.134±0.075	0.112+0.133-0.083
i (deg)	89.00+0.46-0.24	88.759±0.077	---	>88.7	89.35+0.41-0.33
P (days)	24.1396±0.0018	24.141341±0.000023	24.1315+0.0033-0.0034	24.1399±0.0015	24.13861+0.00102-0.00090
R_p (R_⨁)	10.27+0.58-0.53	---	9.53±0.32	9.73±0.63	10.22+0.55-0.59
R_p (R_Jup)	0.916+0.052-0.047	---	0.85±0.03	0.868±0.056	0.911+0.049-0.053
R_p/R_✶	0.0700±0.0023	0.071998±0.000620	0.0636±0.0018	0.0698±0.0024	0.0713+0.0021-0.0020
a (au)	0.1688±0.0026	---	---	0.1719±0.0027	0.1687+0.0025-0.0026
T₁₄ (hours)	6.42±0.13	---	6.42+0.66-0.61	---	6.420+0.071-0.055
T_C (days)	2457067.0488±0.0018	2458781.083656±0.001300	2459481.09023+0.00129-0.00132	2457067.0486±0.0015	2457067.04914+0.00058-0.00061
δ (%)	---	---	---	---	0.5
M_p (M_⨁)	---	---	---	203±60	---
M_p (M_Jup)	---	---	---	0.64±0.19	---
ρ (g/cm³)	---	---	---	1.20±0.45	---
K (m/s)	---	---	---	41±12	---
λ (deg)	---	4.0+7.0-10.0	---	---	---
ψ (deg)	---	8.0+4.0-7.0	---	---	---

V1298 Tau e Planetary Parameters (4 Solutions)

Status: Confirmed Planet
Detected By: Radial Velocity, Transit

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	Finociety et al. 2023	Feinstein et al. 2022	Suárez Mascareño et al. 2022	David et al. 2019
M_p (M_⨁)	321+111-83	---	369±95	---
M_p (M_Jup)	1.01+0.35-0.26	---	1.16±0.30	---
e	---	---	0.100±0.091	<0.57
i (deg)	---	---	>89.0	89.40+0.26-0.18
P (days)	53.5±0.4	44.1699	40.2±1.0	60+60-18
ρ (g/cm³)	1.79+0.66-0.51	---	3.6±1.6	---
R_p (R_⨁)	10.0	9.940±0.390	8.24±0.81	8.74+0.84-0.72
R_p (R_Jup)	0.89	0.89±0.04	0.735±0.072	0.780+0.075-0.064
R_p/R_✶	---	0.0664+0.0025-0.0021	0.0583±0.0040	0.0611+0.0052-0.0037
K (m/s)	47+16-12	---	62±16	---
a (au)	---	---	0.2409±0.0083	0.308+0.182-0.066
T_C (days)	2459481.7967	2459481.79668+0.00121-0.00114	2457096.6226±0.0031	2457096.6229±0.0023
a/R_✶	---	---	---	51+31-11
T_eq (K)	---	---	---	492+66-104
b	---	0.48+0.06-0.07	---	0.52+0.17-0.29
S (S_⨁)	---	---	---	10±6
ω (deg)	---	---	---	91.0±62.0
T₁₄ (hours)	---	7.44+0.79-0.71	---	7.45+0.32-0.25

HD 284154 B Stellar Parameters (1 Solutions)

RA: ---

Dec: ---

Distance: ---

Parallax: ---

Ecliptic Latitude: ---

Ecliptic Longitude: ---

Galactic Latitude: ---

Galactic Longitude: ---

Total Proper Motion: ---

Proper Motion (RA): ---

Proper Motion (Dec): ---

Photometry: m_V
---; m_TESS
---; m_J
---; m_H
---; m_Ks
---; m_Kep
---; m_W1
---; m_W2
---; m_W3
---; m_W4
---; m_Gaia
---; m_B
---; m_g
---; m_i
---; m_r
---; m_u
---; m_z
---

Tools: Stellar Hosts

Source	Suárez Mascareño et al. 2022
T_eff (K)	5700±100
Metallicity (dex)	0.0500±0.1500 [Fe/H]
v sin i (km/s)	10±1
Age (Gyr)	0.020±0.010
M_✶ (M_⦿)	1.28±0.06
R_✶ (R_⦿)	1.477±0.082
Sp. T	G2

HD 284154 Nearby Data (6 Data Types within 30 arcseconds)

Known Objects: 4 Confirmed Planets; 1 K2 Targets; 3 2MASS Point Source Catalog

Data Files: 2 SuperWASP Time Series; 1 K2 Time Series; 4 Associated Literature Data

V1298 Tau Nearby Data (6 Data Types within 30 arcseconds)

Known Objects: 4 Confirmed Planets; 1 K2 Targets; 3 2MASS Point Source Catalog

Data Files: 2 SuperWASP Time Series; 1 K2 Time Series; 4 Associated Literature Data

HD 284154 B Nearby Data (6 Data Types within 30 arcseconds)

Known Objects: 4 Confirmed Planets; 1 K2 Targets; 3 2MASS Point Source Catalog

Data Files: 2 SuperWASP Time Series; 1 K2 Time Series; 4 Associated Literature Data

Bibliography (12 References)

Legend

System

Star

Confirmed

Candidate

False Positive Planet

Controversial

False Positive

Aliases

Data Access

Transit Prediction Service

Time Series

Kepler | K2

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